CN104160365A - Flexible touch panel - Google Patents
Flexible touch panel Download PDFInfo
- Publication number
- CN104160365A CN104160365A CN201380012331.0A CN201380012331A CN104160365A CN 104160365 A CN104160365 A CN 104160365A CN 201380012331 A CN201380012331 A CN 201380012331A CN 104160365 A CN104160365 A CN 104160365A
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- China
- Prior art keywords
- electrode
- winding circuit
- touch screen
- flexible touch
- repacking
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/96—Touch switches
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04102—Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/96—Touch switches
- H03K2017/9602—Touch switches characterised by the type or shape of the sensing electrodes
- H03K2017/9604—Touch switches characterised by the type or shape of the sensing electrodes characterised by the number of electrodes
- H03K2017/9613—Touch switches characterised by the type or shape of the sensing electrodes characterised by the number of electrodes using two electrodes per touch switch
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
- H03K2217/96—Touch switches
- H03K2217/96015—Constructional details for touch switches
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
Abstract
The invention provides a touch panel that has flexibility. A flexible touch panel, provided with: a base material sheet; a first axis detection electrode patterned relative to a first axis, the first axis detection electrode being provided on the base material sheet; an insulating layer provided on the first axis detection electrode; a second axis detection electrode patterned relative to a second axis which is perpendicular to the first axis, the second axis detection electrode being provided on the insulating layer; a first routing circuit for electrically connecting the first axis detection electrode to the exterior; and a second routing circuit for electrically connecting the second axis detection electrode to the exterior.
Description
Technical field
The present invention relates to thin and hold flexible, there is flexible touch-screen.
Background technology
In recent years, use gradually the alternative keyboard of touch-screen or pointing device to be used as the input media of portable terminal device.In addition,, as following portable terminal device, can seek to become from existing such mode with rigidity the there is flexibility mode of (flexibility).Therefore,, for the touch-screen using in portable terminal device, also start gradually requirement flexibility, require thinness and flexibility.
On the other hand, in order to carry out two-dimentional position probing, form touch-screen with bonding two electrode base boards of adhesive sheet.Because the thickness of 1 electrode base board is tens of μ m left and right, so existing touch-screen has about 100 above thickness in μ m left and right, flexible variation.
In addition the technology of, using the photosensitive conductive film being made up of photo-sensitive resin and conductive layer to form conductive film substrate has been well-known (for example,, with reference to patent documentation 1).
Prior art document
Patent documentation
Patent documentation 1: International Publication communique WO2010/021224 handbook
Summary of the invention
The problem that invention will solve
Use the conductive film substrate of the photosensitive conductive film described in above-mentioned patent documentation 1 to relate to 1 conductive film substrate.Therefore,, in order to form touch-screen, result need to form respectively two conductive film substrates, causes as touch-screen, has certain thickness.
Therefore, the object of the invention is to, provide thin and there is flexibility, there is flexible touch-screen.
For the means of dealing with problems
Flexible touch screen of the present invention has:
Substrate sheets;
The 1st repacking survey electrode, it is arranged in described substrate sheets, carries out patterning form about the 1st axle;
Insulation course, it is arranged on described the 1st repacking and surveys with on electrode;
The 2nd repacking survey electrode, it is arranged on described insulation course, carries out patterning form about the 2nd axle vertical with described the 1st axle;
The 1st winding circuit, it carries out surveying with electrode to outside electrical connection from described the 1st repacking; And
The 2nd winding circuit, it carries out surveying with electrode to outside electrical connection from described the 2nd repacking.
In addition,, forming between each wiring of described the 2nd winding circuit, can there is migration preventing layer.
In addition the described migration preventing layer arranging between each wiring of described the 2nd winding circuit of formation, can be arranged to same plane with described each wiring.
In addition, described migration preventing layer be arranged on described the 1st repacking and survey and can be arranged to same plane with the described insulation course on electrode.
In addition, described migration preventing layer can be made up of the material identical with described insulation course.
In addition, can also there is warpage preventing layer at the back side of described substrate sheets.
In addition, can also be that the area at the top of described migration preventing layer is less than the area of bottom, is taper from bottom to top along the cross sectional shape of thickness direction.
Invention effect
According to flexible touch screen of the present invention, substitute two electrode base boards, make the 1st repacking survey with electrode and the 2nd repacking survey electrode be configured between clip thin dielectric layer, thereby can provide thin and there is flexibility, there is flexible touch-screen.
Brief description of the drawings
Fig. 1 is the exploded perspective view that the structure of the flexible touch screen of embodiments of the present invention 1 is shown.
Fig. 2 is the exploded perspective view that the structure of the flexible touch screen of embodiments of the present invention 2 is shown.
Fig. 3 is the sectional view of the flexible touch screen observed from the B-B direction of Fig. 2.
Fig. 4 illustrates summary sectional view in the operation of manufacture method of the flexible touch screen of embodiments of the present invention 2, that the step of conductive layer is set in substrate sheets.
Fig. 5 illustrates summary sectional view in the operation of manufacture method of the flexible touch screen of embodiments of the present invention 2, that conductive layer is carried out to the step of patterning.
Fig. 6 illustrates summary sectional view in the operation of manufacture method of the flexible touch screen of embodiments of the present invention 2, that the step of the 1st winding circuit is set.
Fig. 7 illustrates summary sectional view in the operation of manufacture method of the flexible touch screen of embodiments of the present invention 2, that the step of insulation course and conductive layer is set.
Fig. 8 be illustrate in the operation of manufacture method of the flexible touch screen of embodiments of the present invention 2, mask is set and the summary sectional view of the step of exposing from top.
Fig. 9 be illustrate in the operation of manufacture method of the flexible touch screen of embodiments of the present invention 2, remove mask and the summary sectional view of the step of exposing from the back side.
Figure 10 be illustrate in the operation of manufacture method of the flexible touch screen of embodiments of the present invention 2, carry out alkali development and remove the summary sectional view of the step of uncured insulation course and conductive layer.
Figure 11 be illustrate in the operation of manufacture method of the flexible touch screen of embodiments of the present invention 2, clad is set and obtains the summary sectional view of the step of flexible touch screen.
Figure 12 is the exploded perspective view that the structure of the flexible touch screen of embodiments of the present invention 3 is shown.
Figure 13 is the sectional view of the flexible touch screen observed from the C-C direction of Figure 12.
Figure 14 is the exploded perspective view that the structure of the flexible touch screen of embodiments of the present invention 4 is shown.
Figure 15 is the sectional view of the flexible touch screen observed from the D-D direction of Figure 14.
Figure 16 is the exploded perspective view that the structure of the flexible touch screen of embodiments of the present invention 5 is shown.
Figure 17 is the sectional view of the flexible touch screen observed from the E-E direction of Figure 16.
Figure 18 is the exploded perspective view that the structure of the flexible touch screen of embodiments of the present invention 6 is shown.
Figure 19 is the sectional view of the flexible touch screen observed from the F-F direction of Figure 18.
Embodiment
Below, use accompanying drawing, the flexible touch screen of embodiments of the present invention is described.In addition, in the accompanying drawings, identical in fact parts are marked to identical label.
(embodiment 1)
Fig. 1 is the exploded perspective view that the structure of the flexible touch screen 10 of embodiment 1 is shown.This touch-screen 10 has: substrate sheets 1; X repacking is surveyed with electrode 3, and it is arranged in substrate sheets 1, carries out patterning form about x axle; Insulation course 4, it is arranged on x repacking and surveys with on electrode 3; Y repacking is surveyed with electrode 6, and it is arranged on insulation course 4, carries out patterning form about y axle; The 1st winding circuit 7, it carries out surveying with electrode 3 to outside electrical connection from x repacking; And the 2nd winding circuit 8, it carries out surveying with electrode 6 to outside electrical connection from y repacking.In addition, this flexible touch screen 10 can arrange the clad 9 that effects on surface is protected.In addition, compare with existing touch-screen, this flexible touch screen 10 is different in the following areas: substitute two electrode base boards, make x repacking survey with electrode 3 and y repacking survey electrode 6 be configured between clip thin dielectric layer 4.According to the flexible touch screen 10 of embodiment 1, by forming as above, can make thin and there is flexibility, there is flexible flexible touch screen 10.
In addition,, as shown in the sectional view of Figure 10, also can on the 1st winding circuit 7, insulation course 4 be set.In addition,, as shown in the exploded perspective view of Fig. 1, the 1st winding circuit 7 and the 2nd winding circuit 8 can be formed as surveying with electrode 3 and y repacking and surveying and use the same directional end face of electrode 6 from x repacking.In addition,, in end, the upper surface of the 1st winding circuit 7 and the 2nd winding circuit 8 can not be insulated layer 4 and clad 9 covers.According to the additional structure about above-mentioned the 1st winding circuit 7 and the 2nd winding circuit 8, in end, the upper surface of the 1st winding circuit 7 and the 2nd winding circuit 8 is not insulated layer 4 and clad 9 covers, therefore, by flexible printed board (FPC) being set on the upper surface at the 1st winding circuit 7 and the 2nd winding circuit 8, can easily connect the 1st winding circuit the 7, the 2nd winding circuit 8 and flexible printed board (FPC).
Below, the each parts that form this flexible touch screen 10 are described.
< substrate sheets >
As the material of substrate sheets 1, can enumerate the resin moldings such as propylene, polycarbonate, polyester, polybutylene terephthalate, polypropylene, polyamide, polyurethane, Polyvinylchloride, polyvinyl fluoride, polyimide.The thickness of substrate sheets 1 can suitably be set in the scope of 5 μ m～800 μ m.If thickness is less than 5 μ m, as the undercapacity of layer, in the time peeling off, can break and wait and be difficult to processing, in the situation that thickness exceedes 800 μ m, substrate sheets 1 rigidity is excessive and be difficult to process, and can not obtain flexibility.
< x repacking is surveyed with electrode and y repacking and is surveyed and use electrode >
In Fig. 1, x repacking survey is made up of OBL multiple electrodes respectively with electrode 3 and y repacking survey electrode 6, but the shape of electrode is not limited to oblong-shaped.For example, survey with electrode 3 as x repacking, can, by forming by multiple rhombus electrodes that angular direction is connected, survey with electrode 6 as y repacking, can be by forming by multiple rhombus electrodes that angular direction is connected.In this case, Ke Yishi, in the time of the direction observation from vertical with surface, the rhombus electrode and the formation y repacking survey rhombus electrode of electrode that form x repacking survey electrode 3 are configured in the mode not overlapping each other.Like this, by x repacking survey electrode 3 and y repacking survey electrode 6 are configured in the mode not overlapping each other, can make the detection sensitivity of x axle and y axle not affect each other.In addition,, in Fig. 1, x repacking survey is made as respectively 4 by electrode 3 and the y repacking survey quantity of electrode 6, but is not limited to this, can be made as any amount.
In addition, x repacking survey can form by respectively conductive layer 13 and 16 being carried out to patterning with electrode 3 and y repacking survey electrode 6.As conductive layer 13,16, for example, can use the conductive layer being formed by the light-cured resin such as urethane acrylate, cyanoacrylate bonding agent, conductive nanometer fiber.In addition, conductive layer 13,16, except can make to photogravure, the various general printing processes such as hectographic printing, serigraphy arrange, can also arrange by such sheet such as bonding dry film being made up of the light-cured resin that contains conductive nanometer fiber etc.
In addition, conductive layer 13,16 for example can use the conductive layer being made up of the various resin binders such as propylene, polyester, polyurethane, Polyvinylchloride and conductive nanometer fiber.Can the product being made up of these various resin binders and conductive nanometer fiber be set by various general printing processes such as intaglio, hectographic printing, serigraphys.
The thickness of conductive layer 13,16 can suitably be set in the scope of tens of nm～hundreds of nm.In the time that thickness is thinner than tens of nm, as the undercapacity of layer, in the time that thickness is thicker than hundreds of nm, it is insufficient that flexibility becomes.
< conductive nanometer fiber >
Above-mentioned conductive nanometer fiber has the aspect ratio of about scope of 10～100,000.In the time that aspect ratio is larger, each conductive nanometer fiber is easily contact each other, can form effective x repacking and survey with electrode 3 and y repacking survey electrode 6.In addition, in order to obtain high transparent, the global density of conductive nanometer fiber reduces, and therefore, this is conducive to obtain the x repacking that the transparency is high and surveys with electrode 3 and y repacking survey electrode 6.That is, there is the conductive nanometer fiber of high aspect ratio by use, can fully reduce the density of conductive nanometer fiber, x repacking is surveyed with electrode 3 and y repacking and survey and use electrode 6 essence transparent.
In addition, in the time of the diameter d chap of conductive nanometer fiber, resistivity essence reduces, and electric conductivity improves, but on the other hand, owing to having absorbed more light, light transmission is reduced.Consequently, transparent variation.In addition, grain boundary and surface scattering become large in the time that diameter is less than 10nm on the impact of resistivity.In the time that diameter becomes large, these impacts sharply reduce.In the time that the diameter of conductive nanometer fiber is 10nm～100nm, x repacking survey significantly reduces by electrode 3 and the y repacking survey resistivity of electrode 6 entirety.But, the above-mentioned improvement in electrical specification need to and the transparency of nesa coating weigh between reducing.
As conductive nanometer fiber, for example, can use silver, gold, copper, nickel, vermeil and aluminium etc.Particularly, as the example of conductive nanometer fiber, can enumerate metal nano fiber and peptide nanofiber etc., wherein, described metal nano fiber applies voltage or action current, extracts out and produce continuously to the presoma surface of the metallic ions such as carrying gold, silver, platinum, copper, palladium from the leading section of probe, and described peptide nanofiber etc. is in the nanofiber forming, to add gold particle in peptide or derivatives thereof autologous tissue to form.In addition, even the conductive nanometer fiber 3 of the black such as carbon nano-tube, in the case of identifying and also become object difference with the aspect such as color or reflectivity of shadow.In addition,, as conductive nanometer fiber, be not limited to above-mentioned example.As conductive nanometer wire rod, silver nanoparticle fiber is particularly preferred.
< insulation course >
Insulation course 4 can use the insulation course that has utilized common insulative resin used.In addition, insulation course 4 can be by arranging photo-sensitive resin 14 and making it solidify to obtain.Photo-sensitive resin 14 can use the light-cured resins such as normally used urethane acrylate, cyanoacrylate.In addition as light-cured resin, can be also the light-cured resin that utilizes the light of the wavelength coverage in addition such as visible ray, ultraviolet light to be cured.
< the 1st winding circuit and the 2nd winding circuit >
The 1st winding circuit 7 will be fetched into outside with the electric signal that electrode 3 sends from x repacking survey.In addition, the 2nd winding circuit 8 will be fetched into outside with the electric signal that electrode 6 sends from y repacking survey.The 1st winding circuit 7 and the 2nd winding circuit 8, can use the conductive material using usually used as electrical wiring.For example, can use silver paste.Or, can be similarly to comprise conductive nanometer fiber at interior material with above-mentioned conductive layer 13,16.
In addition, for example, as shown in the sectional view of Figure 10, also can on the 1st winding circuit 7, insulation course 4 be set.In addition,, as shown in the exploded perspective view of Fig. 1, the 1st winding circuit 7 and the 2nd winding circuit 8 can be formed as surveying with electrode 3 and y repacking and surveying and use the same directional end face of electrode 6 from x repacking.In addition,, in end, the upper surface of the 1st winding circuit 7 and the 2nd winding circuit 8 can not be insulated layer 4 and clad 9 covers.In addition, in end face, the 1st winding circuit 7 and the 2nd winding circuit 8 can be in the modes not overlapping in substrate sheets 1, plane earth, separated from one another being configured.
In the situation that overlapping two electrode base boards form touch-screen as in the past, between two electrode base boards, clip flexible printed board (FPC) and carry out the 1st winding circuit and the 2nd winding circuit and outside being connected.Particularly, be clipped in two flexible printed boards between electrode base board and be connected with the 1st winding circuit of the electrode base board of downside, and be connected via the through hole of electrode base board of upside and the 2nd winding circuit of the electrode base board of upside.This be because, touch-screen is overlapping two electrode base boards and forming, therefore, not only at central portion until also there is electrode base board in end face, therefore there are the following problems: in order to carry out and being electrically connected of flexible printed board, need the hole (through hole) of through electrode substrate.The inventor is conceived to the existence of this problem, has found the said structure that can address this problem.
; be formed as surveying from x repacking surveying with electrode 3 and y repacking to be configured to the same directional end face of electrode 6 and at the upper surface of the winding circuit 7 in end the 1st and the 2nd winding circuit 8 at the 1st winding circuit 7 and the 2nd winding circuit 8 and be not insulated layers 4 and clad 9 covers; can easily carry out and being connected of flexible printed board (FPC); wherein, this flexible printed board is for being fetched into outside with electrode 3 and the y repacking survey electric signal that electrode 6 detects by x repacking survey.
According to said structure, in end, the upper surface of the 1st winding circuit 7 and the 2nd winding circuit 8 is not insulated layer 4 and clad 9 covers, therefore, not as existing, flexible printed board (FPC) to be clipped between two electrode base boards, but flexible printed board (FPC) is arranged on to the upper surface of the 1st winding circuit 7 and the 2nd winding circuit 8, thus, without can easily connect the 1st winding circuit the 7, the 2nd winding circuit 8 and flexible printed board (FPC) via through hole etc.
< clad >
In order to protect flexible touch screen 10, can clad 9 be set according to necessity.Clad 9 for example can similarly utilize normally used insulative resin with insulation course 4.
(embodiment 2)
Fig. 2 is the exploded perspective view that the structure of the flexible touch screen 10a of embodiment 2 is shown.Fig. 3 is the sectional view of the flexible touch screen 10a that observes from the B-B direction of Fig. 2.This flexible touch screen 10a is characterised in that between the wiring that forms the 1st winding circuit 7, to have migration preventing layer 12.
Herein, " migration " refers to following phenomenon: the impact of the electric field of the metal ingredient that forms wiring between being connected up and moving on insulant, thus between adjacent wiring, produce electrical short.Especially, the ion migration of silver is regarded as problem, having used in the wiring of silver paste or silver nanoparticle fiber etc., requires to prevent electron transfer.In the flexible touch screen 10a of this embodiment 2, as mentioned above, between the wiring of the 1st winding circuit 7, there is migration preventing layer 12.Thus, there is the effect of the migration between the wiring that can prevent from forming the 1st winding circuit 7.In addition, between the wiring of the 1st winding circuit 7, there is migration preventing layer 12, thus, between the wiring that clad 9 is set to cover the 1st winding circuit 7 time, migration preventing layer 12 is wrapped by layer 9 and covers to fill up the mode of the depression between the wiring of the 1st winding circuit 7.Therefore, in the time making the touch-screen of surface smoothing, the amount of the depression that the reduced thickness migration preventing layer 12 of clad 9 can be filled up.Consequently, as a whole, can obtain thin and there is flexible flexible touch screen 10a.
This migration preventing layer 12 is made up of insulation course.In addition, between the wiring of the 2nd winding circuit 7, photo-sensitive resin is set, makes it curing by exposure, can form thus migration preventing layer 12.As this photo-sensitive resin, can use the material identical with the material using in embodiment 1.
The manufacture method > of < flexible touch screen
Fig. 4～Figure 11 is the summary sectional view that each step of the manufacture method of the flexible touch screen 10a of embodiment 2 is shown.In addition the sectional view that, each sectional view is observed corresponding to the B-B direction from Fig. 2.Below, the manufacture method of flexible touch screen 10a is described.
(1) prepare substrate sheets 1.As substrate sheets, can use above-mentioned material.
(2) conductive layer 13 (Fig. 4) is set in substrate sheets 1.
(3) about x axle, conductive layer 13 is carried out to patterning, form x repacking and survey with electrode 3 (Fig. 5).
(4) arrange and will survey the 1st winding circuit 7 (Fig. 6) that is fetched into outside with the electric signal that electrode 3 sends from x repacking.
(5) survey with photo-sensitive resin 14 and conductive layer 16 (Fig. 7) are set on electrode 3 in the x of patterning repacking.In addition, although pasted the film of stacked photo-sensitive resin 14 and conductive layer 16 herein, be not limited to this, the step of photo-sensitive resin 14 also can be set successively and the step of conductive layer 16 is set.
(6) mask 18 is set, the position that this mask 18 arranges electrode in conductive layer 16 has window, exposes from the top of this mask 18, makes photo-sensitive resin 14 solidify (Fig. 8).
(7) remove mask 18, expose from the back side of substrate sheets 1 (Fig. 9).
(8) by carrying out alkali development or having used sour etching, the position at photoresist 14 because having solidified from the exposure at front or the back side, the conductive layer 16 of its top is also remaining.On the other hand, in the time carrying out from positive exposure, masked 18 cover and do not expose, and in the time of the exposure of carrying out from the back side, are surveyed and cover and there is no the photoresist 14 of part of exposure because there is no curing being removed with electrode 3 and the 1st winding circuit 7 by x repacking.Consequently, photoresist 14 occurs to solidify, and forms insulation course 4.In addition, conductive layer 16 is being patterned aspect y axle, forms y repacking and surveys with electrode 6.In addition, can between each wiring of the 1st winding circuit 7, form migration preventing layer 12 (Figure 10).By this migration preventing layer 12, can prevent from forming the migration between the wiring of the 1st winding circuit 7.In addition, on the 1st winding circuit 7, insulation course 4 is not set.
(9) arrange and will survey the 2nd winding circuit 8 (not shown) that is fetched into outside with the electric signal that electrode 6 sends from y repacking.In addition, the 2nd winding circuit 8 does not appear at the sectional view of observing from the B-B direction of Fig. 2.In addition, the 2nd winding circuit can be formed as with the 1st winding circuit 7 towards identical end face.In addition, the 2nd winding circuit 8 also can be set directly in substrate sheets 1.In addition, in end, the 1st winding circuit 7 and the 2nd winding circuit 8 can be in the modes not overlapping in substrate sheets 1, plane earth, separated from one another being configured.
(10) to cover the y repacking survey mode of electrode 6, clad 9 (Figure 11) is set.In this case, in end, can at the upper surface of the 1st winding circuit 7 and the 2nd winding circuit 8, clad 9 be set.In the case of migration preventing layer 12 being set between the wiring of the 1st winding circuit 7 and arranging clad 9 in the mode covering between the wiring of the 1st winding circuit 7, migration preventing layer 12 is wrapped by layer 9 and covers to fill up the mode of the depression between the wiring of the 1st winding circuit 7.Therefore, in the time making the touch-screen of surface smoothing, the amount of the depression that the reduced thickness migration preventing layer 12 of clad 9 can be filled up.Consequently, as a whole, can obtain thin and there is flexible flexible touch screen 10a.
(11) in end, upper surface at the 1st winding circuit 7 and the 2nd winding circuit 8 arranges flexible printed board (FPC), has connected the 1st winding circuit the 7, the 2nd winding circuit 8 and flexible printed board (FPC) (not shown).In this case, the 1st winding circuit 7 and the 2nd winding circuit 8 are formed as surveying with electrode 3 and y repacking and surveying and use the same directional end face of electrode 6 from x repacking, and, in end, the upper surface of the 1st winding circuit 7 and the 2nd winding circuit 8 is not insulated layer 4 and clad 9 covers, therefore, the winding circuit 8 of the 1st winding circuit the 7, the 2nd and flexible printed board (FPC) can have easily been connected.
By with upper type, can obtain flexible touch screen 10a.
(embodiment 3)
Figure 12 is the exploded perspective view that the structure of the flexible touch screen 10b of embodiment 3 is shown.Figure 13 is the sectional view of the flexible touch screen 10b that observes from the C-C direction of Figure 12.As shown in figure 12, in this touch-screen 10b, migration preventing layer 12 is arranged to same plane with the each wiring that forms the 2nd winding circuit 8.In addition, migration preventing layer 12 is also arranged to same plane with respect to insulation course 4.By forming like this, can roughly eliminate the central portion of flexible touch screen 10b, by x repacking survey with electrode 3, insulation course 4, y repacking survey with electrode 6 and move display part that preventing layer 12 forms and circumference that end is made up of the 1st winding circuit 7 between ladder poor.
The y repacking survey thickness of electrode 6 forming on insulation course 4 is approximately tens of nm, and on the other hand, the thickness of the 1st winding circuit 7 and migration preventing layer 12 is approximately tens of μ m.That is, compare with the thickness of migration preventing layer 12 with the 1st winding circuit 7, y repacking survey can be ignored with the thickness of electrode 6.Therefore, in the case of surveying and arrange clad 9 by electrode 6, the 1st winding circuit 7 and the mode of moving preventing layer 12 to cover insulation course 4, y repacking, between above-mentioned central portion and end, clad closely carries out bonding.Consequently, can prevent from producing iris inequality or entrained air between central portion and end.In addition, the thickness of insulation course 4 is identical with the thickness of the 1st winding circuit 7 and migration preventing layer 12, therefore, in the time pasting clad 9, can prevent entrained air between insulation course 4 and migration preventing layer 12.
(embodiment 4)
Figure 14 is the exploded perspective view that the structure of the flexible touch screen 10c of embodiment 4 is shown.Figure 15 is the sectional view of the flexible touch screen 10c that observes from the D-D direction of Figure 14.This flexible touch screen 10c is characterised in that, in the outer edge in region that is formed with the 1st winding circuit 7, forms insulation course 4 with the thickness identical with migration preventing layer 12, and in addition, this insulation course 4 is made up of the material identical with migration preventing layer 12.By forming like this, when form migration preventing layer 12 and insulation course 4 in substrate sheets 1 time, because thickness is separately identical with material, therefore, be formed with shrinkage factor in the region of migration preventing layer 12 and insulation course 4 identical.Consequently, can be suppressed at and between the display part of formed flexible touch screen 10c and end, produce caused by the difference of the shrinkage factor between migration preventing layer 12 and insulation course 4 concavo-convex.
(embodiment 5)
Figure 16 is the exploded perspective view that the structure of the flexible touch screen 10d of embodiment 5 is shown.Figure 17 is the sectional view of the flexible touch screen 10d that observes from the E-E direction of Figure 16.This flexible touch screen 10d is characterised in that, at the back side of substrate sheets 1, also to have the warpage preventing layer 22 that thickness and material are identical with insulation course 4 with migration preventing layer 12.By forming like this, when form migration preventing layer 12 and insulation course 4 in substrate sheets 1 time, can eliminate the stress (differential contraction stress) producing in the face side of substrate sheets 1.Consequently, as flexible touch screen 10d entirety, can suppress bending generation.
(embodiment 6)
Figure 18 is the exploded perspective view that the structure of the flexible touch screen 10e of embodiment 6 is shown.Figure 19 is the sectional view of the flexible touch screen 10e that observes from the F-F direction of Figure 18.This flexible touch screen 10e is characterised in that, the area that the shape of migration preventing layer 12 is made as to top is less than the area of bottom and is taper from bottom to top along the cross sectional shape of thickness direction.By forming like this, in the end of flexible touch screen 10e, be formed with the position of the 2nd winding circuit 8, forming between each wiring of the 2nd winding circuit 8, there is certain enough and to spare part, thus, in the case of being become, the surface curvature of substrate sheets 1 concave shape, also can allow bending.It by the migration preventing layer 12 of taper, can make each wiring separate and not contact each other on the other hand.Consequently, can obtain following flexible touch screen 10e: there is flexibility in end, and can prevent the short circuit of the 2nd winding circuit 8.
In addition,, by any embodiment in appropriately combined above-mentioned various embodiments, can bring into play the effect that each embodiment has.
, with reference to accompanying drawing, the preferred embodiment of the present invention has been carried out to abundant record, still, to those skilled in the art, various distortion or correction are obvious.Should be understood that such distortion or revise only otherwise depart from the scope of the present invention based on appended claims is included in wherein.
Utilizability in industry
Flexible touch screen of the present invention is as thin and to have flexibility, have flexible touch-screen be useful.It is flexible that this flexible touch screen has, and therefore can be combined in curved display etc.
Label declaration
1 substrate sheets
3 x repacking survey electrodes
4 insulation courses
6 y repacking survey electrodes
7 the 1st winding circuit
8 the 2nd winding circuit
9 clads
10,10a, 10b, 10c, 10d, 10e flexible touch screen
12 migration preventing layers
13,16 conductive layers
14 photo-sensitive resins
18 masks
22 warpages prevent sheet
Claims (7)
1. a flexible touch screen, it has:
Substrate sheets;
The 1st repacking survey electrode, it is arranged in described substrate sheets, carries out patterning form about the 1st axle;
Insulation course, it is arranged on described the 1st repacking and surveys with on electrode;
The 2nd repacking survey electrode, it is arranged on described insulation course, carries out patterning form about the 2nd axle vertical with described the 1st axle;
The 1st winding circuit, it carries out surveying with electrode to outside electrical connection from described the 1st repacking; And
The 2nd winding circuit, it carries out surveying with electrode to outside electrical connection from described the 2nd repacking.
2. flexible touch screen according to claim 1, is characterized in that,
Between the each wiring that forms described the 2nd winding circuit, there is migration preventing layer.
3. flexible touch screen according to claim 2, is characterized in that,
Same plane is arranged in the described migration preventing layer and the described each wiring that between each wiring of described the 2nd winding circuit of formation, arrange.
4. flexible touch screen according to claim 3, wherein,
Described migration preventing layer be arranged on described the 1st repacking and survey and be arranged to same plane with the described insulation course on electrode.
5. flexible touch screen according to claim 4, is characterized in that,
Described migration preventing layer is made up of the material identical with described insulation course.
6. flexible touch screen according to claim 1, wherein,
The back side in described substrate sheets also has warpage preventing layer.
7. flexible touch screen according to claim 2, is characterized in that,
The area at the top of described migration preventing layer is less than the area of bottom, is taper from bottom to top along the cross sectional shape of thickness direction.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012051443A JP5714526B2 (en) | 2012-03-08 | 2012-03-08 | Flexible touch panel |
| JP2012-051443 | 2012-03-08 | ||
| PCT/JP2013/055855 WO2013133214A1 (en) | 2012-03-08 | 2013-03-04 | Flexible touch panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104160365A true CN104160365A (en) | 2014-11-19 |
| CN104160365B CN104160365B (en) | 2018-02-02 |
Family
ID=49116691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380012331.0A Active CN104160365B (en) | 2012-03-08 | 2013-03-04 | Flexible touch screen |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US9379703B2 (en) |
| EP (1) | EP2824546A4 (en) |
| JP (1) | JP5714526B2 (en) |
| KR (1) | KR102016540B1 (en) |
| CN (1) | CN104160365B (en) |
| WO (1) | WO2013133214A1 (en) |
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Also Published As
| Publication number | Publication date |
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| EP2824546A4 (en) | 2016-03-16 |
| CN104160365B (en) | 2018-02-02 |
| KR102016540B1 (en) | 2019-08-30 |
| WO2013133214A1 (en) | 2013-09-12 |
| US9379703B2 (en) | 2016-06-28 |
| KR20140138685A (en) | 2014-12-04 |
| EP2824546A1 (en) | 2015-01-14 |
| JP5714526B2 (en) | 2015-05-07 |
| US20150047957A1 (en) | 2015-02-19 |
| JP2013186706A (en) | 2013-09-19 |
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